Reamer-head



C. G. CASHMAN.

REAMER HEAD. PLICATION FILED 1AN.13, 1917.

Patented Mar.2,1920.

UNITED STATES CLARENCE G. CASHMAN, OF WAYNESBORO, PENNSYLVANIA.

REAMER-HEAD.

Application filed January 13, 1917.

To all whom it may concern:

Be it known that I, CLARENCE G. OAsI-r- MAN, a citizen of the UnitedStates, residing at VVaynesboi-o, Franklin county, and State ofPennsylvania, have invented and discovered certain new and usefulImprovements in Reamer-Heads, of which the following is a specification.

My said invention relates to cutter or reamer heads and consists in thecombinations and arrangen'lents of elements hereinafter described andparticularly set forth in the accompanying claims.

The purpose of the invention is to provide a cutter or reamer head ofthe radial adjustable blade type, wherein the blades are locked in setposition; having means for simultaneously adjusting the several bladesby a simple and easily performed operation: and wherein the adjustingdevice consists of few parts that may be readily assembled ordisassembled.

The invention has for its further purpose to provide a blade adjustingdevice for such a tool in which the blade engaging mem her and lockingdevice therefor are concealed wholly within the reamer head, therebyhaving the reamer exterior free from obstructing parts.

The invention is shown by way of illustratlon 1n the accompanyingdrawing, wherein Figure l is a central longitudinal section through areamer head, constructed in ac cordance with my said invention,

Fig. 2 is a transverse sectional view thereof taken on the line 22 ofFig. 1,

Fig. 3 is a similar view taken on the line 3-3, p

Fig. 4 is a detail View, partly in section of the body of the reamerhead, and

Fig. 5 is a. perspective view of one of the ream r blades.

Referring to the construction in further detail, and wherein likereference characters designate corresponding parts, 6 represents themachine spindle on which the reamer head is mounted, 7 the body of saidreamer head and 8 the several blades, which may be formed as shown or asrequired to adapt them for any character or cutting or reaming for whichthe tool may be intended. I

The head consists of a cylinder constructed for mounting on the machinemandrel and is provided with a plurality of longi- Specification ofLetters latent.

Patented Mar. '2, 1920.

Serial No. 142,275.

rear to front, and the reamer blades are formed with complementarytapered inner edges 10. Each of the grooves 9 has an inset. portion 11along a portion of its inner surface to receive the longitudinal rib 12formed on the lower edge of the blade to hold said blade against radialdisplacement.

The blade adjusting device consists of a. screw -threaded member 13adjustably mounted in a threaded aperture formed centrally in the body 7and constructed at its outer end with a socket 1i, rectangular incross-section, by which a tool or wrench (not shown) may be inserted forturning the same to adjust the several blades.

A. disk 15 of relatively large diameter. is mounted on the reducedportion 16 of the screw bolt 13 and engages within notches 17 formed onthe respective inner and lower edges of the several blades 8 after themanner shown in Fig. 1. A nut 18 screw-threaded on the inner end of themember 16 se cures said disk against axial displacement and a lockingdevice is provided for holding the disk against angular movement.

The locking device comprises a pin or screw 17 screw-threaded on thedisk 15 and engaging within a recess 19 formed in the inner face of thecentral body portion 7. Said pin 17 thereby locks the disk 15 .againstangular movement relative to the body '7, and securely holds the severalblades 8 in set position. The locking disk 15 is constructed with aplurality of peripheral notches 20 disposed equidistant and adapted tobe brought into register with the several notches 17 of the blades whensaid blades are then free to be moved longitudinally.

The blade securing device is wholly con cealed within the body of thereamer head and is therefore accessible only through the rear of thehead, or after the reamer is removed from the machine spindle. Thelooking pin 17 is formed with a. notch 21 to re ceive a screw driver orlike instrument when the disk is to be turned for connection with theblades or disconnection therefrom, as will be understood.

It is obvious that the details of construction and arrangement of partsmay be modified in various particulars without departing from the spiritof my invention, and therefore I do not wish to be limited to suchfeatures except as may be required by the claims.

Having thus fully described my said inventio11,-what I claim as new anddesire to secure by Letters Patent, is

1. A tool comprising a body formed with radially disposed grooves,blades mounted to have radial adjustment in said grooves, means forimparting radial adjustment to said blades, and a blade locking pinengaging with the blade adjusting member and located wholly within saidbody, substantially as set forth.

2. A tool comprising a body formed with radially disposed grooves,blades mounted to have radial adjustment in said grooves, a device forimparting radial adjustment to the blades, and a pin carried by theadjusting device for locking the said device to the body to secure theblades in set position, substantially as set forth.

3. A tool comprising a body formed with radially disposed grooves,blades mounted to have radial adjustment in said grooves, an adjustablemember mounted in the body, a member mounted on said adjustable mem berand engaging with the blades to impart adjustment thereto, and a membercarried by the blade engaging member adapted to engage with said body tosecure said blade engaging member from rotation, substantially as setforth.

4. A tool comprising a body formed with radially disposed grooves,blades mounted to have radial adjustment in said grooves, an adjustablemember mounted in the body, a disk mounted on said adjustable memberengaging with the blades to impart longitudinal adjustment thereto, anda pin mounted on said disk adapted to engage with said body and providea lock to secure the disk in set angular position, substantially setforth.

v5. A tool comprising a body formed with radially disposed grooves,blades mounted to have radial adjustment in said grooves,

a member having screw adjustment in said body, a disk mounted to haveangular movement on the adjustable member and engaging with said bladeswhen in one position to impart adjustment thereto and adapted to befreed from such engagement when turned to another position; and a pinadjustably mounted on said disk adapted to engage with the body to holdsaid disk in set position, substantially as set forth.

6, A tool comprising a body formed with radially disposed grooves,blades mounted to have radial adjustment in said grooves and constructedwith notched edges, a screwthreaded member adjustably mounted centrallyin said body, a notched disk mounted to have angular movement on saidadjustable member engaging with the notches of said blades to secure thelatter in set position; a pin screw-threaded on said disk adapted toengage with said body to hold said disk in set position, and the notchesof said disk adapted when said disk is turned to register with thenotches of the blades to allow of longitudinal movement of said blades,substantially as set forth.

7. A tool comprising a body having a recess and formed with radiallydisposed grooves, blades slidably mounted in said grooves, said bladesand grooves having complementary inclined portions to effect the radialadjustment of the blades; a screwthreaded member mounted centrally ofthe body, a disk mounted on said member within said recess and engagingwith the blades to impart adjustment thereto, and a member carried bysaid disk adapted for engaging with the body to guide and hold the diskin set position, substantially as set forth.

In witness whereof I have hereunto set my hand and seal at Waynesboro,Pennsylvania, this 5th day of January, A. D. nineteen hundred andseventeen.

CLARENCE G. OASHMAN.

